US Bridges

Sc 410 over Br-Mitchell Swamp

Fair

Horry County, South Carolina · 6.5 MI North of Loris · Structure no. 000000000000554

Built
1931
94 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 410 over Br-Mitchell Swamp is a concrete culvert carrying Sc 410 over Br-Mitchell Swamp in Horry County, South Carolina. It was built in 1931, so it is 94 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,450 vehicles a day, roughly 6% of them trucks, projected to reach 2,117 by 2043. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSc 410
CrossesBr-Mitchell Swamp
Location6.5 MI North of Loris
RouteState Highway 410
CountyHorry County
StateSouth Carolina
Coordinates34.14328, -78.93479
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic2,117 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$78,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 410 over Br-Mitchell Swamp built?

It was built in 1931, making it 94 years old in 2025.

What condition is Sc 410 over Br-Mitchell Swamp in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Sc 410 over Br-Mitchell Swamp carry?

About 1,450 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Sc 410 over Br-Mitchell Swamp?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns Sc 410 over Br-Mitchell Swamp?

It is owned by the State Highway Agency.